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	<head>
		<meta charset="utf-8">
		<title>菜鸟教程(runoob.com)</title>
		<style>
			table {
				border-collapse: collapse;
			}
			
			table,
			td,
			th {
				border: 1px solid black;
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	</head>

	<body>

		<table>
			<theader>
				<tr>
					<th rowspan="3">Firstname</th>
					<th>1</th>
				</tr>
				<tr>
					<th>2</th>
					<tr>
						<th>3</th>
					</tr>
			</theader>
			<tbody>
				<tr>
					<td>Peter</td>
					<td>Griffin</td>
				</tr>
				<tr>
					<td>Lois</td>
					<td>Griffin</td>
				</tr>
			</tbody>
		</table>

	</body>

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